Nut lock or fastening device.



PATBNTED- DEG. 3, 19o?. B. HEMANN & A. GUEN-THBR. NUT LOCK- oRPASTE'NING DEVICE.

AIPLIUATION FILED DBO. 13, 1906.l

BENNARD HEMANN AND ALBERT GUENTHER, OF BELLEVILLE, ILLINOIS.

NUT LOCK OR FASTENING DEVICE.

Specification ofLetters Patent.

l Patented Dec. 3, 1907'.

Application filed December 13. 1906. Serial No. 34:7.717-l To all 'whomit may concern:

Be it known that we, BENNARD HEMANN and ALBERT GUENTHER, citizens of theUnited States residing at Belleville, in the county of St. Olair, ,Stateof Illinois, have invented a new and useful Nut Lock or Fasten-v ingDevice, of which the following is a specification.

Our invention consists of a nut lock or fastening device, composed of abody adapted to be fitted on a bolt and embrace the nut so as to preventunscrewing of the latter, and a member adapted to engage with the sideof the bolt, so as to prevent displacement of the device.

Figure l represents a-perspective view of a nut lock or fastening deviceembodying our invention. Fig. 2 represents a perspective view of thesame in position. Fig. 3 repr`esents a front view of the deviceseparated from the nut and bolt. Fig. 4 represents a side elevation ofportion of a bolt and the nut to which the device is applied.l

Similar letters of reference indicate cor responding parts in thefigures.

Referring to the drawings: A designates a bolt, the same having thereonon opposite sides near its terminal the transverse y eX- tending groovesor recesses B, the same breaking the continuity of the threads of thebolt. O designates the lock or fastening device for the nut D, which isplaced upon the bolt as usual, said device being formed of a suitableplate or sheet of wrought metal, and composed of the front face E, theside flanges F, the recess or passage G, and the pliable or somewhatresilient tongue H, the latter being formed by cutting the front face onthe lines J, J turning out said tongue, the bend K of the latter actingafter the manner ofa hinge, said line J bisecting the recess G, so thatwhen said tongue is turned out, the adjacent end of said recess isuncovered.

The operation is as follows, the parts being in position shown in Figs.l and 3: The nut is screwed on the bolt to the required extent,.

when the device is then placed so as to be presented to the same as bestillustrated in Fig. 3 and then moved over the nut while the recess Greceives the adjacent portion of the bolt outside of the nut, it beingnoticed that the walls of said recess enter the grooves B,

thus straddling the bolt, while the flanges F straddle the nut, thusroviding a barrier or abutment for the nut y which the latter isrestrained and so cannot unscrew itself or be unscrewed, it thus beingreliably locked or fastened, but in order to prevent the device fromleaving its positionor be improperly displaced, the tongue H is forcedor bent Atowards the nut, when owing to its pliable or resilient nature,it rides past the end of the bolt and then seats itself at the side ofthe bolt and may interlock with a thread of the latter if so desired,thus holding the device immovably on the bolt, the effect of which isevident as fully illustrated in Fig. 2.

When it is desired to unscrew the nut for any purpose, the tongue isforced or bent outwardly by any suitable implement, whereby it leavesthe shank of the bolt with which it was engaged when the recess G isagain uncovered, and so the device may be slidingly removed from thebolt and nut, leaving the latter accessible to be further tightened orunscrewed, and the bolt to be displaced if so desired.

The outer portion of the tongue H projects sufficiently beyond theadjacent side of the nut as illustrated by the dotted lines, Fig. 2, sothat when required it may be grasped by an implement in order to beconvemently removed from the thread of the bolt and bent outwardly tothe position shown in Fig. l.

ln Fig. 3, we show the end of the shank of the bolt iiattened onopposite places without producing different results from that shown inFig. 2.`

Having thus described our invention,what we claim as new and desire tosecure by Letters Patent, is

1. A nut fastening device comprising a body provided with a flangeadapted to embrace the side of a'nut, a passage 1n said body having itswalls adapted to straddle the shank of a bolt on which the nut is fittedto prevent unscrewing of the nut, and a pliable tongue on said bodyadapted to close said passage and engage said shank, the severalmerlnbers of the device as named being intera g 2. A nut fasteningdevice comprising a body provided with a ange adapted to embrace theside of a nut, a passage in said body which is adapted to receive theWalls of said having its Walls adapted to straddle the passage. shank ofa bolt on which the nut is fitted to prevent unsorewing of the nut, anda pliable BENNARD HEMANN' 5 tongue on said body adapted to close saidALBERT GUENTHER' passage and engage said shank, the several Witnesses:members of the device as named being inte- W. F. KIRCHER,

gral, said shank having in its side a recess l WM. M. HOPPE.

